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Exam API-571 All Questions

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Exam API-571 topic 1 question 58 discussion

Actual exam question from API's API-571
Question #: 58
Topic #: 1
[All API-571 Questions]

Which of the following materials is not susceptible to high temperature hydrogen attack?

  • A. 300 Series SS
  • B. 5 Cr-1Mo
  • C. 9Cr-1Mo
  • D. All of the above
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Suggested Answer: D 🗳️

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ahmadmm
1 year, 4 months ago
Materials affected by High-temperature Hydrogen Attack 300 series SS, as well as 5Cr, 9Cr, and 12Cr alloys, are not susceptible to HTHA at conditions normally seen in refinery units.
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